On 09/01/2017 02:41 PM, Kevin Stange wrote: > On 08/31/2017 07:50 AM, PJ Welsh wrote: >> A recently created and fully functional CentOS 7.3 VM fails to boot >> after applying CR updates: > <snip> >> Server OS is CentOS 7.3 using Xen (no CR updates): >> rpm -qa xen\* >> xen-hypervisor-4.6.3-15.el7.x86_64 >> xen-4.6.3-15.el7.x86_64 >> xen-licenses-4.6.3-15.el7.x86_64 >> xen-libs-4.6.3-15.el7.x86_64 >> xen-runtime-4.6.3-15.el7.x86_64 >> >> uname -a >> Linux tsxen2.xx.com <http://tsxen2.xx.com> 4.9.39-29.el7.x86_64 #1 SMP >> Fri Jul 21 15:09:00 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux >> >> Sadly, the other issue is that the grub menu will not display for me to >> select another kernel to see if it is just a kernel issue. >> >> The dracut prompt does not show any /dev/disk folder either. >> > > I'm seeing this as well. My host is 4.9.44-29 and Xen 4.4.4-26 from > testing repo, my guest is 3.10.0-693.1.1. Guest boots fine with > 514.26.2. The kernel messages that appear to kick off the failure for > me start with a page allocation failure. It eventually reaches dracut > failures due to systemd/udev not setting up properly, but I think the > root is this: > I created bugs for this issue (at least as I'm able to reproduce it): https://bugs.centos.org/view.php?id=0013763 https://bugzilla.redhat.com/show_bug.cgi?id=1487754 Please add any extra information you might have to hopefully increase the chance the problem gets fixed. -- Kevin Stange Chief Technology Officer Steadfast | Managed Infrastructure, Datacenter and Cloud Services 800 S Wells, Suite 190 | Chicago, IL 60607 312.602.2689 X203 | Fax: 312.602.2688 kevin at steadfast.net | www.steadfast.net